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//===- SimplifyLibCalls.h - Library call simplifier -------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file exposes an interface to build some C language libcalls for
// optimization passes that need to call the various functions.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_TRANSFORMS_UTILS_SIMPLIFYLIBCALLS_H
#define LLVM_TRANSFORMS_UTILS_SIMPLIFYLIBCALLS_H
namespace llvm {
class Value;
class CallInst;
class DataLayout;
class TargetLibraryInfo;
class LibCallSimplifierImpl;
/// LibCallSimplifier - This class implements a collection of optimizations
/// that replace well formed calls to library functions with a more optimal
/// form. For example, replacing 'printf("Hello!")' with 'puts("Hello!")'.
class LibCallSimplifier {
/// Impl - A pointer to the actual implementation of the library call
/// simplifier.
LibCallSimplifierImpl *Impl;
public:
LibCallSimplifier(const DataLayout *TD, const TargetLibraryInfo *TLI);
virtual ~LibCallSimplifier();
/// optimizeCall - Take the given call instruction and return a more
/// optimal value to replace the instruction with or 0 if a more
/// optimal form can't be found.
Value *optimizeCall(CallInst *CI);
};
} // End llvm namespace
#endif
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